Improvement in modes of inlaying jet with metal



Patented Aprn 27.1875.

' mvlsnon:

-sY f momma W. STEPHANS.

Mode of Inlaying let with Metal.

No.162,58.A

WITNESSES m '.NITED STATES WILLIAM STEPHANS,

OF NEV YORK, N. Y.

IMPROVEMENT IN MODES OF INLAYlNG JET WITH METAL.

Specification forming part of Letters Patent No. 162,586, dated April27, 1875; application filed October 31, 1874.

To all whom it may concern:

Be it known that I, WILLIAM STEPHANs, of the city, county, and State ofNew York, have invented a new and useful Improvement in Mode of InlayingJet with Metal, of which the following is a specification:

Figure 1 is a top view of the lower or female die for cutting ont themetal plate to be inlaid in the jet. Fig. 2 is a detail section of thelower or female die, taken through the line 5v fr, Fig. l, showing themale die in side view, and the metal plate in position to be operatedupon. Fig. 3 is a detail section of the jet and'of the guard-plate, andthe die for recessing the jet. Fig. 4 is a detail crosssection of therecessing-die, taken through the line y y, Fig. 3. Fig. 5 is a top viewof the guard-plate. Fig. 6 is a detail cross-section of the recessedjet, taken through the line z c, Fig. 8. Fig. 7 is an edge View of theplate to be inlaid, shown as having the screwpin attached. Fig. 8 is atop view of the recessed jet. Fig. 9 is the same view as Fig. 6, butshowing the inlaid plate and a stud-shank applied to the jet.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved mode of inlayingmetal in jet, for studs, buttons, pins, and other articles of jewelry,by means ot' which irregular and complex forms may be inlaid in jet, andwhich will enable the work to be done quicker and neater than ispossible when done in the old Way.

'lhe invention consists in the mode of inlaying jet with metal,hereinafter describedthat is to say, by burning a recess of the propersize and form in the jet, by means of a recessed die and a sheet metalguard-plate, as set forth.

A represents the lower or female die, in which is formed an openingofthe exact form of the metal piece to be inlaid in the jet. B is theupper or male die, which is made of the exact form of the opening in thedie A. C is the metal plate from which the piece to be iilaid is to becut. D is the die with which the recess is to be formed in the jet. Theoutline of the die D is the same as that ot' the die B, but its face hasrecesses dl formed in it, from which holes or openings d2 lead outthrough the sides ot' the die D, as shown in Figs. 3 and 4. E is a plateof thin sheet metal, having a hole formed through it of the exact formot' the die D. F represents a piece of jet, iu which the metal Gis to beinlaid, and through it, directly beneath the place where the recess f1is to be formed to receive the plate G, are formed several small holes,f2, as shown in Figs. 6, 8, and 9.

ln recessing the jet F it is placed upon some support that will supportit squarely, and will not cover the holes f2. The sheetmetal plate E isthen placed evenly upon the face of the jet. The die D is heated to adull red heat, and is inserted in the opening in the plate E, andpressed down upon the jet F until the recess f1 has been burned to ltherequired depth.

lhe cavities and holes all cl2 of the die D, and the holes through thejet F, allow the smoke and gases developed by the burning to escape, andthus prevent the jet from being cracked or broken. At the salne time theplate E absorbs the heat that would otherwise burn down the edges of therecess f1, and prevent said edges from being clean and sharp. The bottomof the recess f1 is then covered with wax or cement to such a depth thatthe surface ofthe piece G, when inserted, may be iiush with the surfaceof the jet F.

To the center of the jet F, when a stud is to be made, is secured apin,g, which is passed through the center hole f2, and has a screwthreadcut upon it, so that the shank H can be screwed upon it, and thus heldsecurely in place. I

The open ends ot' the holes f2 may be lled with wax, or small screws omay be screwed l into them.

In this way pieces G- of metal of any desired form, no matter howirregular or complex, may be easily and quickly inlaid in jet, and thework may be done without danger of cracking or chipping the jet. Vhenthe pieces G are large, pins g may also be appied to their ends toassist in securing them in place.

rlhe above-described process can be applied with equal facility andadvantage for inlaying hard rubber, tortoise-shell, and other Inaterialswith metal.

Having thiis described my invention, I claim guard-plate peiforations,and the application as new mid desire to secure by Letters Patoi cementand an ornamental device imme-v entdiately after the removal of saidinstruments,

The process of inlaying jet with metal, conl.ill substantially as setforth.

sisting in the application of a guard-plate per- WILLIAM STEPHANS.

foratcd with the desired design to the article Witnesses:

of jet, the burning of a matrix in the jet by JAMES T. GRAHAM,

heated dies, which are passed through the T. B. MOSHER.

